Beaker (English: Beaker) is a scientific instrument that is used in the laboratory to contain chemical substances, so that the heat. Mix or react. A cylindrical, flat butt, mouth slightly to cleave off and pouring chemicals to aid in changoi. 50 ml to 5 litres so far, which often are told by volume, but does not have the purpose to measure liquids. Beaker used for laboratory made of fire-resistant glass and plastic-made type.
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